Know Your Environment. Protect Your Health.

Nitrate and nitrite

Yadkinville, Town of

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

 

11

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.500 ppm21ND - 1.000 ppm
20191.10 ppm111.10 ppm
2020ND30ND
2021ND20ND
2022ND20ND
20231.10 ppm111.10 ppm

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.14 ppm

The EWG health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

EPA Maximum Contaminant
Level (MCL): 10 ppm

ppm = parts per million

All test results

Date Lab ID Result
2018-04-0592379788001N+N1.000 ppm
2018-05-1792385214001N+NND
2019-04-0492424085001_377121.10 ppm
2020-02-2792467099001_37712ND
2020-11-1792506638001_37712ND
2020-11-1792506638002_37712ND
2021-11-1092572132001_37738ND
2021-11-1092572132002_37738ND
2022-08-1192620004001_37712ND
2022-09-0792624364001_37712ND
2023-01-0592645353001_377121.10 ppm